Questions

Q:

Hub works on which layer?

A) Network layer B) Physical layer
C) Data link layer D) All of the above
 
Answer & Explanation Answer: B) Physical layer

Explanation:

Hub works on layer 1 i.e, physical layer.

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Q:

The genetic material of HIV consists of

A) DNA B) RNA
C) Both A & B D) None of the above
 
Answer & Explanation Answer: B) RNA

Explanation:

The genetic material of HIV consists of two single stranded RNA molecules.

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Q:

Which of the following is an Inert Gas?

A) Hydrogen B) Nitrogen
C) Oxygen D) Argon
 
Answer & Explanation Answer: D) Argon

Explanation:
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Q:

Which stage of cellular respiration produces the most ATP?

A) Glycolysis B) Kreb's cycle
C) Electron transport chain D) All the above
 
Answer & Explanation Answer: C) Electron transport chain

Explanation:

There are 3 stages in cellular respiration. They are:

1. Glycolysis

2. Kreb's cycle

3. Electron transport chain

 

Here, Glycolysis produces only 2 ATP whereas Kreb's cycle produces no ATP. Electron transport chain of the cellular respiration produces the maximum ATP.

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Q:

At which stage in its life cycle does the silkworm yield the fiber of commercial use

A) Larva B) Egg
C) Pupa D) Imago
 
Answer & Explanation Answer: C) Pupa

Explanation:
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Q:

Glass is made of the mixture of

A) sand and silicates B) quartz and sand
C) mica and quartz D) mica and silicates
 
Answer & Explanation Answer: A) sand and silicates

Explanation:

A glass is made of liquid sand. You can make glass by heating ordinary sand and made into a liquid and mix with silicates to form a glass.

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Q:

Vertebrates and tunicates share 

A) a notochord and a dorsal, hollow nerve cord. B) the formation of structures from the neural crest.
C) jaws adapted for feeding. D) an endoskeleton that includes a skull.
 
Answer & Explanation Answer: A) a notochord and a dorsal, hollow nerve cord.

Explanation:
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Q:

What would be the output of the following program?

main()

{

    static int a[20];

    int i = 0;

    a[i] = i++;

    printf ("\n%d%d%d", a[0],  a[1], i);

}

Answer

0  0  1


That's what some of the compilers would give. But some other compiler may give a different answer. The reason is, when a single expression causes the same object to be modified and then inspected the behaviour is undefined.

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